Even for an older bitch, it is better not to need a c-section. I think I would just wait until day 56 or so and get an x-ray to ensure that we have a regular sized litter, not just one or two huge puppies. Also having an accurate count of the pups in there, can help you know whether or not she is done. When they are older, they may get tired out sooner, and if a pup doesn't show up, that can be fatal. Also, I would make sure the gal gets regular exercise, and plenty of healthy food to give her the stamina she will need to get through whelping.
Keep vanilla ice cream, carnation condensed milk on hand to give her a boost in the middle of the process, maybe a couple of boosts.
Good luck. Hope all goes well.
Heidi Ho, Odie
Joy-Joy, Bear Cub, Hepsi-Pepsi
Cujo2, Karma Chameleon
Ramona the Pest, Kojak -- who loves you baby?
Tiny Tinnie, Susie's Uzzi, Kaiah -- The Baby Monster.